Samsung Galaxy Note 9 Battery Drain ?

Hi all i been a proud owner of the Galaxy Note 9 for about a week now. i love the Note 9 but what's up with the battery ? Like today, i had 100% i must of watched a video on YouTube about 10 mins, and the rest with background playback screen off.. this was about 4pm so about 5:10ish pm i turned the background playback off..

I hadn’t touched the phone till 1am i.e standby only Bluetooth off 4G and sync on screen res at FHD i have lost around 27 percent battery that is awful ? My Tab S 8.4 is over 4 half years old even that don’t have this much drain sync on, 4G on, no wi-fi, no Bluetooth.

For example i can leave the Tab S 8.4 overnight it will lose about 4% to 5% overnight not bad for nearly a 5 year old battery

But Note 9 will lose more than 15% to 20 + % overnight there is something not right?

Other thing Samsung i don’t want to root the my Note 9 (But you’re not leaving me much option) You installing all this Facebook garbage ? And you not allowing me to uninstall from the phone witch i purchased (Sim Free) is a bit of a joke ? What's up with that ?

I hate carrier bloatware that’s why I always purchase my smartphones sim free.. But now your installing Facebook bloatware is a bit stupid! Not everyone purchases a high end smartphone to use Facebook. Samsung please compute that! There should be a option to have unbranded firmware.. Thanks

Not sure how to get into safe mode? Will google it. Also i did read online, it takes about a week or so for the NOTE 9 to learn usage pattern, and for the battery to adjust. Not sure how true that is ?

It’s been over two weeks today I lost around 40ish % today. That’s from 4pm ish till 01:00 am my Note 9 was only on standby with 4g on, and sync on.. Everything else off, and I didn’t even touch the phone just in pocket..

Also I did try nova launcher as someone somewhere said Samsung launcher is the Android System drain, is that true ? it worked good for a few days then the drain came back..

It’s a massive joke my main culprit is for battery drain is Android System and Samsung email client these two are the main suckers. Android System is taking up a chunk of the battery just for being in standby how can I fix the Android System battery drain? And please note I’m using official Samsung email client and that’s got an fairly big drain as well..

I have just booted into safe mode will run for a few days see how I get on.. Also I did check App issue report nothing is begin highlighted or shown in there. Thanks

Safe mode is no good everything gets disabled all my apps so i don't see how that is useful to find the culprit app ? Today 7-am i put the Note 9 into flight mode, come 4-pm i checked phone i had lost 1% it was 80% when i put into flight mode and it dropped 1% battery when i turned off flight mode sync on 4g on bluetooth on as i needed to sync my Gear S3 data..

so it seems like this could be a network drain and Android System keeps sucking battery when network is on.. Can some please let me know can Samsung Remotely diagnose my phone ?